Lubricating system for internal combustion engines



B. N. PIERCE 1,932,599

LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed July 23, 1931 m e r 5 90 m {2 Wm J @fifi z Snvcntor ji/l/ ca attorney Patented Oct. 31, 1933 LUBRICATING SYSTEM FOR INTERNAL COMBUSTION ENGINES Burt N. Pierce, New York, N. Y., assignor to Emerol Manufacturing (30., New York, N.

corporation of Illinois Application July 23, 1931. Serial No. 552,725

12 Claims.

This invention relates to certain new and useful improvements in lubricating systems for internal combustion engines as disclosed in an application filed by Vernon W. Thompson and Burt N. Pierce, December 8, 1930, Serial Number 500,928, and is a companion application of my I applications filed even date herewith, the object being to provide novel means for mounting the needle valve so as to control the passage of lubricant through the aperture of the diaphragm.

Another object of my invention is to provide novel means for holding and adjusting this valve in respect to the diaphragm so that the operator of a motor vehicle having one of these devices on the dash can adjust it todetermine the amount of lubricant being fed to the cylinders of the engine. I

A still further object of the invention is to provide novel means for holding the pivot of the needle valve arm in position when the sections of the housing are assembled.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

In the drawing:

Figurel is a side elevation, partly in section, of the housing having the sight feed opening used in connection witha-lubricating system as disclosed in the Thompson and Pierce application;

Figure 2 is a horizontal section through a portion of the housing showing the manner of mounting the needle valve arm and securing its pivot in position when the sections of the housing are assembled;

Figure 3 is an enlarged detailed view through the arm and the needle valve;

Figure 4 is a vertical section through the arm;

Figure .5 is an elevation;

Figure 6 is a detail enlarged elevation showing the opposite side of the arm to that disclosed in Figure 5; and

Figure 7 is a detail elevation showing the spring forholding the arm against the adjusting cam.

In the drawing A indicates a housing formed of sections 1, 2 and 3, the sections 1 and 2'having a diaphragm 4 secured between the same. The housing is adapted to be placed on the dash of a motor vehicle and connected to the internal combustion engine and to a source of supply.

The back section 1 is provided with an inlet nipple 5 adapted to be connected by a pipe to the source of lubricant supply and the inter- 55, mediate section 2 is provided with an outlet away to receive the nipple 6 as shown at 24 and nipple 6 adapted to be connected to the intake manifold of an internal combustion engine by a pipe through which the lubricant is adapted to be drawn by suction to the cylinder of the engine created by the displacement of the piston.

The diaphragm is provided with a central opening in which a plug 7 is arranged carrying a drip spoon 8 as clearly shown and described in a companion application filed even date herewith. Y

The intermediate section is substantially ringshaped and is provided with substantially V- shaped inwardly projecting arms 9 and 10, the arm 9 being provided with a socket 11 forming a bearing and the arm 10 with an apertured lug I 12 forming a bearing through which is adapted to extend a pivot pin 13 which is locked in position by an inwardly projecting lug 14 formed on the outer section 3, said section being provided with a sight opening 3'.

Mounted on the pivot pin 13 are the apertured ears 15 of an arm 16 provided at its lower end with an aperture 17, one face of said arm being concaved as shown at 13 and the other face of said arm being provided with ridges 19 to each side of the aperture. Extending through the aperture 1'7 of the arm is a needle valve 20 having an annular collar 21 cooperating with the ridges 19 and carrying a member 22 having a convexed face extending into the concaved cavity 18, said member being secured on the needle valve by swedging the same so as to adjust the valve in the arm.

The needle valve is provided with a tapering portion 23 extending into'the apertured plug of the diaphragm so as to control the passage of lubricanttherethrough.

By constructing and mounting the needle valve in this particular manner, it will be noted that the needle valve is capable of springingv back and forth over the ridges 19 in one direction and in the opposite direction in sliding over these ridges so as to provide a universal connection between the supporting arm 16 and the needle valve in order to obtain a perfect seating of the needle valve in the plug of the diaphragm so as to control the passage of lubricant therethrough.

The section 3 of the housing is substantiallycup-shaped, the flange of the cup being cut is provided with a cut-away portion to receive a stem 25 carried by theintermediate section which has slidably mounted, therein a shaft 26 carrying a cam 27 which engages the free end of the arm lfi'and is held tightly in engagement therewith by a flat spring 28 extending under the arms 9 and 10 as clearly shown in Figure 7 The shaft 26 carries a cap 29 having a sleeve portion 30 with numerals from 0 to 5 extending from a predetermined point and arranged to travel opposite a pointer 31 loosely mounted on the stem 25 and adapted to be held in proper position by the notch of the outer casing when the various sections of the housing are assembled.

By calibrating the sleeve 30 with numerals from 0 to 5, when the cap is turned to the right or left, the needle valve will be adjusted so as to allow a predetermined amount of lubricant to pass through the aperture of the plug of the diaphragm as it is drawn by suction from the source of supply to the cylinders of the engine.

These various sections of the housing are secured together in any suitable manner, but pref erably as shown in the companion application filed even date herewith, wherein the sections 1 and 2 are secured together JO clamp the diaphragm and these sections are then secured to the front section 3 so that when these various sections are assembled, all the parts will be held in their proper position.

It will be noted that when the front section is placed in position, the lug 14 extends against the end of the pivot pin 13 of the arm 16 so as to prevent lateral movement of said pin whereby it is held in position by the assembling of said parts.

It will also be noted that when the front section is placed in position, the pointer is posi-.

tioned by the notch formed in the housing so as to hold it in proper position and by turning the cam so as to bring the 0 designation opposite the pointer, the needle valve will be set so as to practically close the aperture in the plug 7 and by turning it either to the right or left, the needle valve will be moved away from the diaphragm so as to allow the lubricant to pass therefrom.

From the foregoing description it will be seen that I have provided a novel form of housing and manner of mounting the needle valve so as to control the passage of lubricant to the cylinders of the engine when used in connection with a lubricating system relying on the suction of the engine caused by the piston displacement to draw fuel from a source of supply to the cylinders of the engine.

'In the operation of a lubricating system constructed in accordance with my invention when applied to an internal combustion engine, assuming that the engine is idling with the throttle valve in substantially closed position, suction is created through the pipe connecting the housing to the intake manifold of the engine whereby a reduced pressure is produced in the chamber of the housing which causes the movable wall or diaphragm to move or be drawn towards the needle valve so as to reduce the size of the passage through the diaphragm whereby only a small amount of lubricant will be drawn from. the source of supply by suction of the engine and delivered to the combustion chambers and valves.

As the speed of the engine increases by the opening of the throttle, the suction is reduced and the flexible diaphragm moves back into its normal position so as to increase the size of the r oannular opening in the diaphragm around the needle valve whereby a greater quantity of lubr cant will be drawn from the source of supply and delivered to the combustion chambers of the engine and by adjusting the needle valve, the

' operator can control to a nicety the quantity of lubricant being delivered to the combustion chambers and valves of the engine.

What I claim is:

1. In a lubricating system for internal combustion engines, a housing having an inlet and outlet, an apertured movable wall disposed in said housing between said inlet and outlet, a movably mounted arm and a needle valve having a universal movement in said arm cooperating with the ape ture of said movable wall for regulating the passage of lubricant through said aperture.

2. In a lubricating system for internal combustion engines, a housing having an inlet adapted to be connected to a source of lubricant supply and an outlet adapted to be connected to the intake of the engine, an apertured diaphragm disposed in said housing between said inlet and outlet'through which lubricant is adapted to be drawn by the suction of the engine, a movable arm mounted in said housing, means for adjusting said arm, and a needle valve having a universal movement in said arm adapted to cooperate with the aperture of said diaphragm for controlling the passage of lubricant therethrough.

3. In a lubricating system for internal combustion engines, a sectional housing having an apertured flexible diaphragm disposed therein, said housing having inlets and outlets on opposite sides of said diaphragm adapted to be connected respectively to a source of lubricant supply and the intake of the engine, anarm pivotally mounted in said housing, a needle valve universally mounted in one end of said arm adapted to co operate with the aperture of. said diaphragm, a cam engaging saidarm and a spring for holding said engagement with said cam.

4-. In a lubricating system for internal combustion engines, the combination with a housing having an apertured flexible diaphragm mounted therein through which lubricant is adapted to be drawn by the suction of the engine, a pivoted arm mounted in said housing having an aperture at one end provided on one face with a concaved socket and on its other face with ridges to each side of said aperture, a needle valve loosely mounted in the aperture of said arm having a collar engaging said ridges, a member carriedby said needle valve having a convexed face working in the cavity of said arm and means for rocking said arm so as to move said needle valve in respect to the aperture of said diaphragm.

'5. In a lubricating system for internal combustion engines, a sectional housing having an apertured diaphragm provided with an inlet and anoutlet adapted to be connected respectively to a source of lubricant supply and the intake of the engine, a pivoted arm mounted in said housing carrying a needle valve cooperating with the aperture of said diaphragm for controlling the passage of lubricant through the aperture of said diaphragm, said needle valve being mounted on the slidably mounted pivot pin, one section of said housing being adapted to extend from the path of travel of saidpivot pin for holding said pivoted pin in its bearing when said sections are assembled. I I 1 6. In a lubricating, system for internal combustion engin s, a housing having a diaphragm mounted therein having an inlet and an outlet to each side of said diaphragm adapted to be connected respectively to a source of lubricant supply and the intake of an internal combustion engine, saiddiaphragm being provided with an apertured plug, an arm pivotally mounted in said housing, a needle valve mounted for unispan versal movement with said arm and adapted to cooperate with the apertured plug of said diaphragm for controlling the passage of lubricant through said apertured plug, a shaft carrying a cam engaging said arm, a cap carried by said shaft provided with numerals and a pointer arranged at one side of said numerals for indicating the position of said cam in respect to said arm.

7. In a lubricating system for internal combustion engines, a housing having an inlet and an outlet adapted to be connected res ectively to a source of lubricant supply and the intake of the engine, a pivotally mounted arm mounted in said housing carrying a loosely mounted needle valve, an apertured diaphragm disposed in said housing between said inlet and outlet adapted to cooperate with said needle valve for controlling the passage of lubricant through the aperture of said diaphragm, a cam, a spring engaging said arm for holding said arm in engagement with said cam and means for rotating said cam to adjust the position of said needle valve.

8. In a lubricating system for internal combustion engines, a housing having an apertured dia phragm mounted therein through which lubricant is adapted to be drawn by suction in its passage from the source of supply to the cylinders of the engine, an arm pivotally mounted in said housing carrying a needle valve cooperating with the aperture of said diaphragm for controlling the passage of lubricant through the aperture of said diaphragm, a cam for rocking said arm, and a spring for holding said arm in engagement with said cam.

9. In a lubricating system for internal combustion engines, a sectional housing having an inlet and an outlet for lubricant, a diaphragm mounted in said housing having an aperture through which lubricant is adapted to be drawn by suction of the enginaan arm pivotally mounted in said housing carrying a needle valve cooperating with said aperture for controlling the passage of lubricant therethrough, a cam engaging the free end of said arm, a spring for holding said arm against said cam and means for indicating the position of said cam in respect to said arm to determine the position of said needle valve in respect to the aperture of said diaphragm.

10. In a lubricating system for internal combustion engines, a housing having an apertured diaphragm through which lubricant is adapted to be drawn by the suction of the engine, a movably mounted arm carrying a needle valve 00- operating with the aperture of said housing for controlling the passage of lubricant through said aperture, a shaft mounted in said housing carrying a cam engaging said arm and means for rotating said shaft to move said arm to adjust the position of said needle valve in respect to said diaphragm.

11. In a lubricating system for internal combustion engines, a housing having an inlet and an outlet, an apertured diaphragm arranged in said housing through which lubricant is adapted to be drawn by the suction of the engine from the source of supply to the cylinders of an engine, a pivoted arm carrying a loosely mounted needle valve to cooperate with the aperture of said diaphragm for controlling the passage of lubricant therethrough, a cam engaging the free end of said arm and a spring for holding said arm in engagement with said cam.

12. In a lubricating system for internal combustion engines, a housing having an apertured diaphragm through which lubricant is adapted to be drawn by the suction of the engine, a movably mounted arm having an apertured end, said arm being provided with a concaved portion upon one face and ridges upon the other face to each side of said aperture, a needle valve loosely mounted in the aperture of said arm adapted to cooperate with the aperture of said diaphragm for controlling the passage of lubricant through the aperture of said diaphragm, said needle valve having a collar cooperating with said ridges and a member with a convexed face cooperating with the concaved portion of said arm to allow said needle valve to rock and slide on the ridges of said arm.

BURT N. PIERCE. 

